//
//  ViewController.h
//  iOS左右两级联动
//
//  Created by 岚海网络 on 2019/4/4.
//  Copyright © 2019 ljm. All rights reserved.
//

#import <UIKit/UIKit.h>

@protocol ProductsDelegate <NSObject>

- (void)willDisplayHeaderView:(NSInteger)section;
- (void)didEndDisplayingHeaderView:(NSInteger)section;

@end


@interface ViewController : UIViewController

@property(nonatomic, weak) id<ProductsDelegate> delegate;/**< delegate */

@end

